Flat panel display device



FIG. 1 is a front elevational view of a flat panel display device showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right-side elevation view thereof;

FIG. 6 is left-side elevation view thereof; and,

FIG. 7 is a front, top and left-side perspective view thereof. 

CLAIM The ornamental design for a flat panel display device, as shown and described. 